(Unicode C++) Validate a Smartcard PIN

Validates a smartcard PIN. This example only runs on Windows and requires Chilkat v9.5.0.77 or greater.

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#include <CkCertW.h>

void ChilkatSample(void)
    {
    // Note: Requires Chilkat v9.5.0.77 or greater.

    CkCertW cert;

    cert.put_SmartCardPin(L"000000");

    // Load the certificate on the smartcard currently in the reader (or on the USB token).
    // Pass an empty string to allow Chilkat to automatically choose the CSP (Cryptographi Service Provider).
    // See Load Certificate on Smartcard for information about explicitly selecting a particular CSP.
    bool success = cert.LoadFromSmartcard(L"");
    if (success != true) {
        wprintf(L"%s\n",cert.lastErrorText());
        return;
    }

    // Check to see if the SmartCardPin property contains the valid PIN for the smartcard.
    int pinValid = cert.CheckSmartCardPin();
    if (pinValid < 0) {
        wprintf(L"Unable to check the PIN validity.\n");
        wprintf(L"%s\n",cert.lastErrorText());
        return;
    }

    if (pinValid == 1) {
        wprintf(L"PIN is valid.\n");
    }
    else {
        wprintf(L"PIN is invalid.\n");
    }
    }